Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Very low light intensities inhibited decoated seeds.

Taxon: CITRULLUS COLOCYNTHISCitrullus colocynthist0
Treatment: Very low light intensitiese0
Outcome: decoated seedse0
Direction: inhibite0

Not reportedComparator

Verbatim

e0
“Very low light intensities sufficed to inhibit decoated seeds”
✓ located verbatim in the source · abstract, characters 1485–1546

t0
“CITRULLUS COLOCYNTHIS”
✓ located verbatim in the source · title, characters 37–58

Title

GERMINATION‐REGULATING MECHANISMS IN CITRULLUS COLOCYNTHIS

D. Koller; A. Poljakoff‐Mayber; A. Berg; et al. American Journal of Botany 1963. doi:10.1002/j.1537-2197.1963.tb07233.x

Other claims from this paper (12)

Observation Intact mature dry seeds did not germinate under a wide variety of conditions.
Intervention effect Opening or removing the testa made germination possible.
Intervention effect Other pretreatments, including ones modifying or piercing the testa, did not induce germination.
Observation No inhibitors were found in the testa.
Intervention effect Continuous light below 25 C inhibited germination of decoated seeds.
Intervention effect Removing the inner seed membrane removed light inhibition of germination.
Intervention effect Continuous light greatly reduced naked embryo growth at all temperatures and strongly influenced early development.
Intervention effect The intact inner seed membrane inhibited germination in light below 25 C but had no effect in darkness.
Mechanism Moist filter paper reproduced the membrane inhibitory effect, suggesting interference with respiratory gas exchange.
Observation At least 12‐hr daily illumination was required for significant inhibition.
Intervention effect Blue visible light was most inhibitory.
Observation Light perception was located in the radicular embryo portions.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Green light or low light intensities slightly promoted peach flower bud opening.

Taxon: PeachPrunus persicae0
Treatment: Green light or low light intensitiese3
Outcome: Flower bud openinge2
Direction: slightly promotede3

Verbatim

e0
“Peach leaf and flower buds showed different light requirements for opening”
✓ located verbatim in the source · abstract, characters 9–83

e2
“Flower bud opening was relatively light independent”
✓ located verbatim in the source · abstract, characters 168–219

e3
“Green light or low light intensities slightly promoted it, while red and white light or high intensities caused some inhibition”
✓ located verbatim in the source · abstract, characters 221–348

Title

The Effect of Light Types on Leaf and Flower Bud Burst of Excised Peach Shoots1,2

S. Lavee; A. Erez HortScience 1969. doi:10.21273/hortsci.4.4.290

Other claims from this paper (3)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Low light intensities stimulated maximum hardiness.

Taxon: Hedera helix L. var. ThorndaleHedera helixt0
Treatment: Relatively low light intensitiese0
Outcome: maximum hardinesse0
Direction: stimulatede0

Not reportedComparator

Verbatim

e0
“Relatively low light intensities and short photoperiods stimulated maximum hardiness”
✓ located verbatim in the source · abstract, characters 404–488

t0
“Hedera helix L. var. Thorndale”
✓ located verbatim in the source · title, characters 41–71

Title

The Role of Light in Cold Acclimation of Hedera helix L. var. Thorndale

Peter L. Steponkus; F. O. Lanphear PLANT PHYSIOLOGY 1968. doi:10.1104/pp.43.2.151

Other claims from this paper (8)

Intervention effect Light greatly increased cold hardiness.
Observation Cold acclimation could occur without light.
Intervention effect Photoperiods of 8 to 24 hours equally promoted maximum hardiness.
Intervention effect Short photoperiods stimulated maximum hardiness.
Association Longer photoperiods proportionally increased hardiness only in prestarved stems.
Intervention effect CO(2) exclusion decreased hardiness.
Intervention effect High concentrations of photosynthetic inhibitors decreased hardiness.
Observation Hardiness under these treatments did not fall to the dark control level.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Light-source age had no effect on barley apical development at comparable light intensities.

Taxon: BarleyHordeum vulgaret0
Treatment: age of the light sourcee0
Outcome: apical developmente0
Direction: no effecte0
Comparator: comparable light intensitiese0

Verbatim

e0
“The age of the light source had no effect on apical development under comparable light intensities”
✓ located verbatim in the source · abstract, characters 558–656

t0
“Barley”
✓ located verbatim in the source · title, characters 54–60

Title

Effects of Daylength and Light Intensity on Growth of Barley I. Growth and Development of Apex with a Fluorescent Light Source

D. Aspinall; L. G. Paleg Botanical Gazette 1963. doi:10.1086/336231

Other claims from this paper (7)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Dry weight of all plant organs was increased by high light intensities.

Taxon: Scrophularia MarilandicaScrophularia marilandicat0
Treatment: high light intensitiese0
Outcome: dry weight of all plant organse0
Direction: augmentede0

Not reportedComparator

Verbatim

e0
“The dry weight of all plant organs was augmented by high light intensities”
✓ located verbatim in the source · abstract, characters 1066–1140

t0
“Scrophularia Marilandica”
✓ located verbatim in the source · title, characters 60–84

Title

Effects of Temperature and Light Intensity on the Growth of Scrophularia Marilandica

Morris G. Cline Ecology 1966. doi:10.2307/1934265

Other claims from this paper (19)

Association In growth rooms, net assimilation rate was proportional to light intensity up to 123 cal/cm2/day.
Association In semi-natural studies, net assimilation rate was proportional to light up to 150 cal/cm2/day.
Association In semi-natural studies, from 150 up to 300 cal/cm2/day net assimilation rate increased but not proportionally.
Intervention effect Above 300 cal/cm2/day net assimilation rate was independent of solar radiation.
Association Under controlled conditions net assimilation rate decreased slightly with age at the highest light levels.
Intervention effect Vegetative phase length, specific leaf area and leaf-area ratio decreased sharply at higher light intensities.
Observation Roots and axillary shoots were especially sensitive to light intensity.
Association In growth-room experiments, temperature effects were more pronounced than light effects.
Intervention effect Stem elongation was completely inhibited at temperature regimes below 63/73 F.
Intervention effect Leaf expansion was markedly diminished below 57/68 F.
Intervention effect As a consequence of low temperature the shoot developed a rosette habit and flowering was inhibited.
Intervention effect Decreasing temperature to 48/58 F had little effect on root growth.
Intervention effect The net effect of low temperatures was to depress the shoot-root ratio.
Intervention effect Net assimilation rate was increased by lowering temperature from 63/73 to 48/58 at all light intensities.
Intervention effect The shoot-root ratio of shaded plants was increased more by a rise in temperature than that of unshaded plants.
Intervention effect Inhibition of stem elongation and subsequent rosette development at low temperatures was not affected by changes in light intensity.
Intervention effect The usual development of greater leaf areas under lower light intensities was partially reversed at low temperatures.
Mechanism The timing differential between leaf expansion in April and shoot elongation in May appears to be a temperature-photoperiod interaction.
Observation Roots increased greatly in size through late summer into early autumn.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Plants at recommended light intensities had the largest chlorophyll contents.

Taxon: shade-requiring greenhouse cropst0
Treatment: recommended light intensitiese0
Outcome: chlorophyll contentse0
Direction: Largeste0

Not reportedComparator

Verbatim

e0
“Largest chlorophyll contents were found in plants receiving recommended light intensities.”
✓ located verbatim in the source · abstract, characters 687–777

t0
“shade-requiring greenhouse crops”
✓ located after whitespace/quote normalisation · title, characters 76–108

Title

Light Intensity and Air Movement Effects on Leaf Temperatures and Growth of Shade-requiring Greenhouse Crops1

W. J. Carpenter; J. P. Nautiyal Journal of the American Society for Horticultural Science 1969. doi:10.21273/jashs.94.3.212

Other claims from this paper (5)

Intervention effect Sunlight caused necrosis on Saintpaulia leaves at every tested wind velocity, with less injury as velocity rose.
Intervention effect Higher wind velocities produced more compact Codiaeum, Philodendron and Sansevieria than recommended light intensities.
Association Leaves of Codiaeum, Philodendron and Sansevieria became smaller as air velocity declined.
Intervention effect New Codiaeum leaves developed abnormal variegation at the lowest air movement.
Association In sunlight, chlorophyll content generally increased as air movement increased.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Such low light intensities may prevent the invasion of other plant species.

Taxon: Sasa kurilensisSasa kurilensise0
Outcome: the invasion of other plant speciese5
Qualifier: Such low light intensitiese5

Verbatim

e0
“Sasa kurilensis community at Mt. Waisuhorun”
✓ located verbatim in the source · abstract, characters 97–140

e5
“Such low light intensities can prevent the invasion of other plant species”
✓ located verbatim in the source · abstract, characters 1057–1131

Title

Ecological Studies of Sasa Communities

Yasuyuki OSHIMA Shokubutsugaku Zasshi 1961. doi:10.15281/jplantres1887.74.280

Other claims from this paper (18)

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

RGR, NAR and LAR differed significantly between Lolium populations at both light intensities.

Taxon: LoliumLoliumt0
Outcome: RGR, NAR, and LARe1

Verbatim

t0
“Lolium Populations”
✓ located verbatim in the source · title, characters 32–50

e1
“Significant differences between populations were found for RGR, NAR, and LAR at both light intensities”
✓ located verbatim in the source · abstract, characters 356–458

Title

Assimilation Rate and Growth of Lolium Populations in the Glasshouse in Contrasting Light Intensities

D. WILSON; J. P. COOPER Annals of Botany 1969. doi:10.1093/oxfordjournals.aob.a084339

Other claims from this paper (10)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Unit leaf rate curves for field and cabinet conditions are closely similar at very low light intensities and diverge at higher intensities.

Taxon: Impatiens parvifloraImpatiens parviflorae0
Outcome: curvese1
Direction: divergee1
Qualifier: at higher intensitiese1

Verbatim

e0
“growth of Impatiens parviflora DC in the laboratory”
✓ located verbatim in the source · abstract, characters 48–99

e1
“While closely similar at very low intensities, the curves rapidly diverge at higher intensities”
✓ located verbatim in the source · abstract, characters 2444–2539

Title

PLANT GROWTH AND THE AERIAL ENVIRONMENT

A. P. HUGHES; G. C. EVANS New Phytologist 1962. doi:10.1111/j.1469-8137.1962.tb06285.x

Other claims from this paper (9)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Other selections had unchanged responses at lower light intensities.

Taxon: Townsville lucernet0
Treatment: lower light intensitiese0
Outcome: response of the other selectionse0
Direction: not alterede0

Not reportedComparator

Verbatim

e0
“The response of the other selections was not altered at the lower light intensities”
✓ located verbatim in the source · abstract, characters 684–767

t0
“Townsville lucerne”
✓ located verbatim in the source · title, characters 13–31

Title

Flowering in Townsville lucerne ( Stylosanthes humilis ). 1. Studies in controlled environments

DF Cameron Australian Journal of Experimental Agriculture and Animal Husbandry 1967. doi:10.1071/ea9670489

Other claims from this paper (7)

Observation All selections showed a strong short-day flowering response.
Observation Early selections flowered at a maximum daylength of 13 hours.
Observation Midseason and late-midseason selections flowered at a maximum daylength of 12 hours.
Observation Late selections flowered at a maximum daylength of 11 1/2 hours.
Intervention effect Midseason selections flowered at 12 1/2 hours when supplementary light was 20 or 5 ft.c.
Intervention effect High night temperature delayed or inhibited flower initiation.
Intervention effect Low day temperature delayed or inhibited flower initiation.

“light intensities”

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